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A5931-3 - Three-Phase Sensorless Fan Driver

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Allegro

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A5931-3 Three-Phase Sensorless Fan Driver by Allegro - Datasheet Preview — Datasheet preview – A5931-3

Datasheet Details

Part number	A5931-3
Manufacturer	Allegro
File Size	1.22 MB
Description	Three-Phase Sensorless Fan Driver
Datasheet	A5931-3 Datasheet
Additional preview pages of the A5931-3 datasheet.

A5931-3 Product details

Description

The A5931-3 three-phase motor driver IC incorporates sensorless sinusoidal drive to minimize vibration for high speed server fans.

Sensorless control eliminates the requirement for Hall sensors for server fan applications.

A flexible closed-loop speed control system is integrated into the IC.

Features

Closed-loop speed control.
Speed curve configuration via EEPROM.
Programmable deceleration time.
I2C serial port.
Sinusoidal modulation for reduced audible noise and low vibration.
Sensorless (no Hall sensors required).
Low RDS(ON) power MOSFETs.
3 A capability.
Minimal external components.
PWM speed input.
FG speed output.
RD rotor lock output.
Lock detection.
Soft start.

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Published: Jan 7, 2025 |